Your doctor will adjust your dose on the basis of the condition to be treated, your age, and risk factors such as kidney problems.
You should use this drug for at least 24 to 48 hours after symptoms and fever have subsided. For a streptococcal infection, doses should be taken for at least 10 days.
For most infections, the usual daily dose is 1 to 2 grams divided into 2 or 4 equal doses, depending on severity.
For treatment of brucellosis
The usual dose is 500 milligrams 4 times daily for 3 weeks; the drug should be accompanied by streptomycin.
For treatment of syphilis
You should take a total of 30 to 40 grams, divided into equal doses over a period of 10 to 15 days.
Gonorrhea patients sensitive to penicillin can take tetracycline, starting with 1.5 grams, followed by 0.5 gram every 6 hours for 4 days, to a total dosage of 9 grams.
For urethral, endocervical, or rectal infections in adults caindicated by Chlamydia trachomatis
The usual dose is 500 milligrams, 4 times a day, for at least 7 days.
CHILDREN 8 YEARS OF AGE AND ABOVE
The usual daily dose is 10 to 20 milligrams per pound of body weight divided into 2 or 4 equal doses.
Tetracycline should be taken at least one hour before or two hours after meals to prevent binding to food and the resulting reduced absorption of the tetracycline. For most infections, tetracycline is taken two to four times daily for 7 to 14 days.